Double-crawler-wheel obstacle crossing wheelchair

A technology with double tracks and track wheels, which can be used in patient chairs or special transportation tools, vehicle ambulance, medical transportation, etc. It can solve the problem of poor adaptability of stairs, complex movement rules, and failure to meet user comfort and reliability, etc. problem, to achieve the effect of ensuring stability

Inactive Publication Date: 2012-10-03
SHANGHAI DIANJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The present invention is aimed at the conventional stair-climbing wheelchairs in the prior art, which have poor adaptability to stairs, cannot meet the needs of users for comfort and relia

Method used

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  • Double-crawler-wheel obstacle crossing wheelchair
  • Double-crawler-wheel obstacle crossing wheelchair
  • Double-crawler-wheel obstacle crossing wheelchair

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Embodiment Construction

[0027] In order to illustrate the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

[0028] see figure 1 , figure 1 Shown is a three-dimensional structure schematic diagram of the double-track wheel obstacle-surmounting wheelchair of the present invention. The double-track wheel obstacle-crossing wheelchair 1 includes a chair part 10, which is used for the user to sit on; a switching mechanism 11 between the roller transmission and the track wheel transmission, and the switching mechanism 11 is arranged on the chair part 10, and is used for switching between the roller transmission and the track wheel transmission of the standing aid climbing mechanism 1, and the auxiliary standing mechanism 12, the auxiliary standing mechanism 12 is arranged on the lower side of the chair part 10, and is used for Assists the user in s...

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Abstract

A double-crawler-wheel obstacle crossing wheelchair comprises a chair part and a switching mechanism which is used for switching the roller transmission and the crawler wheel transmission of the double-crawler-wheel obstacle crossing wheelchair, wherein the crawler wheel transmission is provided with a first crawler wheel and a second crawler wheel, which are connected with each other through a connection bracket, the maximal angular speed of the crawler wheels is described in the specification, wherein omega represents the angular speed, m represents the mass of a multifunctional climbing wheelchair, h represents a gravity core height of the multifunctional climbing wheelchair, L represents the contact length between the crawler wheel and the floor, J represents the rotation inertness of the multifunctional climbing wheelchair, alpha represents an angle between a bottom line of the crawler wheel and the floor, and r represents an angle between a connection line of the gravity core of the multifunctional climbing chair and a front landing point and the crawler wheel. The structural error of a four-bar mechanism is compensated by applying a five-bar mechanism, so that the switching mechanism of the double-crawler-wheel obstacle crossing wheelchair realizes high-precision movement output, or completes a complicated movement principle; and the obstacles are crossed by adopting the double-crawler-wheel way, so that the obstacle crossing stability can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of machinery and control, in particular to an obstacle-surmounting wheelchair with double crawler wheels. Background technique [0002] Wheelchairs are an indispensable means of transportation for the elderly and infirm. But, traditional wheelchair just can't cross when encountering hurdle. Among them, going up and down stairs is the biggest obstacle for these people with disabilities. In 200, the country considered installing elevators for these houses in order to solve the problem of going up and down stairs in these houses, but due to various reasons, the plan was shelved. [0003] At present, the way abroad to solve the problem of wheelchair users crossing the stairs is to use the emergency evacuation transport equipment of the building - the stair climber, which is about to temporarily fix the wheelchair on the stair climber, so as to go up and down the stairs. Put it back to the original place after...

Claims

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Application Information

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IPC IPC(8): A61G5/06
Inventor 傅晓锦朱世奇袁融吴昊闫宁张喆
Owner SHANGHAI DIANJI UNIV
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